Trying to ensure the right people will see this, @Infi ;)
– OdedDec 8 '14 at 11:33

@Oded how so? The logos already exist, don't they? So it's matter of linking to them in one place...
– Shadow WizardDec 8 '14 at 11:56

@ShadowWizard - someone still needs to export to png and eps (assuming we just want those formats). I don't know how easy/handy the originals are for this. And of course, some work needs to be done to display them. I don't think that having 130 logos * 2 on a page is great UI.
– OdedDec 8 '14 at 11:59

I think that including all the sites there would make the page too long, with too many images.

What might make sense is to add a page to each site's help center with the information and download links for that site.

Also, sites will sometimes have alternate versions of the logo, which could be placed on their site-specific page. For example, Mi Yodeya's official logo displayed on the site has the Hebrew text around the tree, but there's an alternative version with the text inside the tree that's been used in print publications.